I just wanted to throw it out there if you are looking for a good mount that is pretty universal with most cases and you can easily grab and go check out http://www.scosche.com/magicmount
I haven't seen it around much. I came across it and thought it looked cool and perfect for me. I have the plate between my phone and Otterbox commuter and it works great. I previously was using the Ibolt device, but my only problem was it took two hands to get it in and out.